Combined drill and screw set



S. SOLOP.

COMBINED DRILL AND SCREW SET. APPLlCATION mil) ozc. 3&1921.

1,424,600. Patented Aug. 1, 1922.

IN [/5 N TOR 5. 50/0 B y l 4 TTORNE SYDOB SdI-OP, OJ? BROOKLYN, NEWYORK.

coirnmnn mans; AND fscanw SET.

Specification of Letters Patent.

Patented A112. 1. 1922.-

Applicatlon flled necemb'er 3, 1921. Serial Ne.5 19,587.

To all whom it ma concern:

Be itknownthat SYDOB Sonar, citizen of Russia, residing at Brook] 11, inthe county of Kings and State of ew York, have invented certain newanduseful Imrovements in Combined Drill and Screw gets, of which thefollowing is a specification.

One of the ob'eets of this invention is to provide an im ement nerallyknown as a bit-stock, wit means or quickly e aging and disengaging andat the same time, to positively compe rotation of various griping meansadapted to attachment with the hit-stock spindle.

Another object is the means for manually tightenin and releasing-thegripping jaws w 1en emp oyed in holding dri screws and other tools thatrequire rotary motion in their use.

These and other objects are attained by the novel construction andarrangement of arts hereinafter described and shown in t e accompanyingdrawing forming a material part of this disc osure, and v in which QFigure 1 is an elevational view of the device as assembled.

Figure 2 is a bottom plan view of the same. p 3

Figure 3 is apartial sectional top plan view taken on the line '33 ofFigure 1.

Fi re 4 is a artial sectional side eleva tiona view of t e' gr ppingmembers.

Figure 5 is a ertial sectional bottom plan view taken'on line 5 -5 ofFigure 4:.

Referring to the drawings in detail, the numeral 10 dwignates the offsetelement of a bit-stock frame having a handle 11 and a lower end orsocket 12 provided with forked ears 13 integral therewith.

A thumb actuated latch 14: is engaged between the ears 13 by a pivot 15.A bent flat spring 16, holding the latch in place, is secured to theframe 10 by a screw 17.

Formed in the end of the socket 12, and extending upward therein, is arectangular opening adapted to receive a square tang 18, as shown inFigure 4.

The square tang 18 is an integral part of a screw-threaded spindle 19,the upper end of which is provided with an openmgQO to receive the bolt21 of the latch.'

A star wheel 22, has a tapered hub 23, through which is a screw-threadedopening adapted to adjustably receive the spindle screw w. A11interiorly threaded connectmg link 24, fitted te'the spindle is slottedat the ends to receive the jaw members 25, pivoted therein and whoseupper, inner port1ons are in movable engagement with the annulartapererd hub 23. The lower, inner ends 26 of the jaw levers are bentinwardly and adapted to center and sup ort various sized screws 27, asshown in Figure 1.

When it is desired to hold a drill 28, or other tools, supplementaryjaws 30 are interposed between the regular jaws 25, the inner faces ofwhich are rovided with grooves 31 for centering an gripping the rill,The upper ends of the jaws 30 are pivotally connected to a cross member32, having an integral rectangular rejection 33 adapted to enter asimilarly sloped recess formed in the lower end of the spindle 19.

Interchangeable with the auxiliar tool holding jaws is a screw drivingmem er 35 having a blade 36 adapted to engage the kerf of a screw as at27, and a rectangular projection 33, on the upper end, enterable in therecess formed in the end of the spindle screw 19.

As the spindles 19 are readily removable from and mtercha any numberofindividual chucks or ripp' heads may be employed for hol ferent tools,as a starting drill, a ho y size drill, a countersink and a screw drivibit.

From the drawing it will be seen that by rotating the star wheel aboutthe spindle, the jaws will be opened or closed, thus providing means forquickl placing or removin any article engageab e between the jaws.

he cross link 24., being engaged on the screw 19, provides adjustmentfor the position of the screw driving bit with res ct to the diameter ofthe screw head, a similar adjustment is also required when the auxiliaryjaws are employed.

Although the foregoing is descriptive of the preferred embodiment of theinvention, it will be apparent that minor changes may be made in itsconstruction, without the exercise of invention or conflicting with thescofpc of the claims hereto appended.

aving thus described my invention, what I claim as new and desiretosecure by Lettors Patent, is:

1. A brace driven tool holder consisting of a spindleexteriorly'threaded and having a rectangular projection adapted to fitngeable in the socket 12,

acent the first montionedjaw's means for rotating the auxiliary awsoonsiting of cross bar-pivoted to -sai auxlliar jaws and 7 having a.rectangular projection ttingji recess of similar shape formed in thelower end of the spindle screw, and means for 10- simultaneously closingboth airs ofjaws,

2. A brace drivon tool ho der comprising a ohuck, having inner and outerairs of p yobed' jawsvsnpported b a screwt readed spindle s'cr'ew,a'star whee for operating and p .closingjzhe jaws; saicijaws havingrotary 5 'en'gn gemnt wibh the spindle, sand inner jaws beinginbe'rchangoably engageable with said spin e, and means forinterchangeably connecting said spindle to the brace.

In witness whereof I affix my signature. 20

ES'YDORSOLOP.

